Truss.



w: Hn' jfll TRUSS.

APPLICATION FILED MIG-2h 1913.

1,141,799. Paten ted June 1, 1915.

HormJz 53' "his Hiornqgg- THE NORRIS PETERS Cl).l PHOTD'LITHOH WASHINGTDN, D E."

human srnrns remnant ensues,

WILLIAM H. HORN, J3., 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO WM. I-I.

HORN & BROTHER, 0F PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

TRUSS.

matinee. V

Specification of Letters Patent.

Patented June 1, 1915.

To all whom it may concern Be it known that 1, WILLIAM H. l-lonn, J12, a citizen of the United States, resldmg in Philadelphia, Pennsylvania, have invent-- side members and the back pad of a truss,

which in addition to reinforcing said side members, at what would otherwise be a weakened point, shall permit of their adjustment relative to each other and to the pad with the utmost nicety, and at the same time shall be of such a nature as to prevent turning of the back pad.

Another object of the invention is to provide a device for connecting the side members of a truss to the back pad thereof, which shall be of such a nature as to firmly hold said pad in place and reliably retain it in any given position. 7

These objects and other advantageous ends I secure as hereinafter set forth, reference being had to the accompanying drawings, in which,

Figure 1 is a perspective view of a truss having my invention applied thereto; Fig. 2 is a detached perspective View on an enlarged scale illustrating the detail construction of the connection between the back pad, and the side members of the truss, and Fig. 8 is a transverse section of the back pad, further illustrating my invention.

In the above drawings, 1 represents the back pad of a truss to which are connected two curved spring members 2 and 3 whose outer ends approach each other and carry front pads 4 of any suitable construction. The present invention relates more particularly to the means for adjustably connecting these members 2 and 3 to the back pad 1, and with this idea in view I mount in or upon the rear face of said pad, preferably adjacent the center thereof, a circular or other suitably formed plate 5, in the present instance riveted to a steel plate 6, forming the relatively stiff frame-work of the pad within the body of which it is embedded.

Said plate 5 has a parallel sided depression 9 of substantially rectangular section and is designed to co-act with a second plate 7 likewise having a transverse depression 8. The two depressions 8 and 9 are of substantially the same depth and the two plates are held together by screws 10, preferably countersunk in the plate 7 so as to enter threaded holes '11 in the plate 5 on opposite sides of its depression 9.

The sum of the depths of the two depressions 8 and 9 is slightly less than the sum of the thicknesses of the steel strips 2 and 8* forming the bodies of the spring side members 2 and 3, and as a consequence, after the ends of said strips have been overlapped within the passageway formed between by the two depressions in the plates 5 and 7, the tightening up of the screws 10 will cause the plate 7 to clamp these two spring strips in any given positions. Obviously the pad 1 is effectually prevented from turning or changing its position relative to the line of the spring strips 2 and 3 at the point where these are connected to it, and it is'noted that the passageway formed by the two depressions in the plates 5 and 7 has its center line substantially parallel to the general longitudinal line of the body 1. It is therefore, possible to cause the spring strips of the truss to overlap to a greater or less extent in order to suit the truss to individuals of different size, and it is obvious that after the screws 10 have been set up, the pad and the side members are immovably held relatively to each other, the whole construction being rigid as is desired in such cases.

Under conditions of use, I have found the above arrangement of parts highly satisfactory, for merely by loosening the screws 10, the spring strips 9 and 3 may be overlapped to a greater or less extent and may thereafter be rigidly held in any adjusted position by the tightening of said screws, since the plates not only serve to clamp the spring strips in place but since the latter fit within and engage the sides of the depressions 8 and 9, in said plates, said strips are effectually prevented from turning relatively to the back pad.

I claim 1. The combination in a truss of a pad; side members consisting of two strips of spring material having a substantial rectan ular section' with means for connectb o a 1 0 mg said strips to the pad, conslsting of a plate having a depression into which the overlapping ends of said strips closely fit so as to be held from turning relatively to said pad; and means for causing said plate to clamp said strips to the pad.

2. The combination in a truss of a pad; a plate fixed thereto and provided With a depression; spring side members overlapping one another upon said plate; a second plate; and means for separably connecting said plates to adjustably clamp the strips between the same.

3. The combination in a truss Of-a pad; a plate mounted thereon and having a depression; a second plate also having a depression; screws adjustably connecting said plates; and two side members of spring material having their ends of substantially rectangular section overlapped Within the pas-' sageway formed by the depressions of the Copies of thispatent may be obtained for of two subscribing witnesses.

two plates, said members closely fitting said passageway so as to be held by the Walls thereof from turning relatively to the pad.

4c. The combination in a truss of apadya plate fixed thereto; a second-plate adjust ably mounted on the first plate; tWo spring members overlapping each other between the plates; and means on the plates for preventing their rotation with the pad relatively to said members. a

5. The combination in'a truss of a pad; 7 two lmperforate over-lapping flat side members; and means for rigidly clamping said members to said-pad.

In testimony whereof, I have signed my name to this specification, in the presence I WILLIAMHHORRJR I Witnesses: 1 V r WI LIAM E BRADLEY, V r Jos. LLKLE N.

five cents each, by addressing the Commissioner of Patents.

Washington, D. 0.? V i 

